From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andi Kleen Subject: Re: 2.6.16rc5 'found' an extra CPU. Date: Thu, 2 Mar 2006 01:55:46 +0100 Message-ID: <200603020155.46534.ak@suse.de> References: <20060301224647.GD1440@redhat.com> <20060301230317.GF1440@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Return-path: Received: from ns1.suse.de ([195.135.220.2]:46480 "EHLO mx1.suse.de") by vger.kernel.org with ESMTP id S1750799AbWCBAxx (ORCPT ); Wed, 1 Mar 2006 19:53:53 -0500 In-Reply-To: <20060301230317.GF1440@redhat.com> Content-Disposition: inline Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Dave Jones Cc: linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, Ashok Raj On Thursday 02 March 2006 00:03, Dave Jones wrote: > On Wed, Mar 01, 2006 at 05:46:47PM -0500, Dave Jones wrote: > > This amused me. > > > > (17:43:34:davej@nemesis:~)$ ll /proc/acpi/processor/ > > total 0 > > dr-xr-xr-x 2 root root 0 Mar 1 17:43 CPU1/ > > dr-xr-xr-x 2 root root 0 Mar 1 17:43 CPU2/ > > dr-xr-xr-x 2 root root 0 Mar 1 17:43 CPU3/ > > (17:43:36:davej@nemesis:~)$ > > Digging further. I notice more oddities (or maybe I've just > misunderstood this -- corrections welcomed) Probably related to Ashok's ACPI CPU hotplug patches. What's the full bootup log? > (17:59:02:davej@nemesis:~)$ cat > /sys/devices/system/cpu/cpu0/topology/core_id 0 > (17:59:23:davej@nemesis:~)$ cat > /sys/devices/system/cpu/cpu1/topology/core_id 0 > > (17:59:38:davej@nemesis:~)$ cat > /sys/devices/system/cpu/cpu0/topology/core_siblings > 00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000001 > (17:59:47:davej@nemesis:~)$ cat > /sys/devices/system/cpu/cpu1/topology/core_siblings > 00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000002 > > Neither of these CPUs are HT / dual-core, so shouldn't these be the same ? It looks like a standard dual socket machine. Each CPU is a sibling of its own only. -Andi